Question about Samsung HLN617W 61" Rear Projection HDTV

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Samsung DLP model hln617w won't turn on (not bad bulb)

TV worked fine the last time used. Now when I turn it on it makes the usual 'click' sound, the green LED lamp indicator comes on (as it usually does when powering on) for about 1 second, then the TV turns off.

Assuming it was the lamp I replaced the bulb with the one I had previously removed from the set and stored for just such an emergency (replaced previous bulb because I had to replace a damaged screen and the bulb was a few years old, not because bulb was burned out. Prevention is better than repair). The problem persists. Any ideas would be appreciated.

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  • sorlen916 Jun 30, 2009

    Yes, tried this first.

  • sorlen916 Jun 30, 2009

    No, the TV turns itself off too quickly for this to happen.

  • Rich Elliott
    Rich Elliott May 11, 2010

    Have you unplugged the tv and all external components? If not try this and see if the TV comes back.

  • Rich Elliott
    Rich Elliott May 11, 2010

    Can you see the bulb illuminate upon powering up?

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Samsung is notorious for having bad color wheels in their DLPs. Well lets just say they are like toasters, they only last a certain amount of time. If the color wheel isn't spinning or is broken, the set will power down almost immediately after you hit the button, you may not even hear the entire fire up jingle. Check the wheel, if you can see the bulb light up for that split second. Actually, check it whether the bulb lights up or not.

Posted on Jun 29, 2009

  • Axle80
    Axle80 Jul 02, 2009

    Any luck checking the color wheel? I can help you through the dismantle if you're stuck. A quick and easy way to partially check the color wheel is to pull the lamp housing and look straight into the compartment that the lamp shines into. You'll see about half of a golfball sized glass wheel. If you can see any missing pieces of the 'pie', you've found your problem. If not, it may be on the other side you can't see. With the lamp removed, bypass the lamp door switch and power on the TV, watch to see if the color wheel moves or not. If not, you may need to do some surgery. The wheel on this set is an older model. The glass is held in place by a pressure plate. The glass tends to slip out over time and either lodges itself in the plastic housing and stops the wheel from spinning, or breaks and sets off the motor sensor. I've seen more than one of these wheels broken and if you're lucky, as was the case of the last one I worked on, the glass had just slipped out. with a carefull push and some high quality super glue, the color wheel was as good as new.

    The other culprit could be the ballast. It is the 3 x 8 (ish) circuit board that the lamp wires hook into. Its also on the optics block tray. These are trickier to diagnose but are cheaper to replace. Give it a thorough look over, look for any burst or crowned capacitors and any tell tale signs of shorting. When dealing with the ballast please be aware that the large capacitors on this board carry enough punch to do more than enough damage to send you to the hospital. I am not kidding. So if/when you do inspect it make sure the TV has been disconnected from the wall at least over night. Even then be carefull as you handle it. This should give you a better start on your repairs. I may be able to further assist in the dismantle if you're not comfortable doing it cold turkey. Feel free to email me directly if you'd like. Cfoley@hawaii.rr.com

    Good luck!

  • Axle80
    Axle80 Jul 02, 2009

    Two more quick things. The lamp door switch may not be the only switch you have to bypass to get the tv to spin the wheel. There may be another similar switch the senses wether the lamp housing is in place. It should look relatively the same and shouldn't be too hard to locate.

    Second, when you're looking at the color wheel throught the housing access. It will be very obvious which part is the color wheel. Its, yep you guessed it, a three color glass wheel.

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